+ = ( + )/( + ) 5 + + 2 + 2 + 4 + 3 2 2 2 + 3 + 5 + 6 + + + + 2 + 5 5 + + 2 = (5 + 1 + 2) = 8 = + 3 + 2 + 4 2 4 3 = (1 + 3) + (2 + 4) = 4 + 6